Photographic processing apparatus with a tubular developer dispenser



May 26, 1964 Filed Aug. 23, 1961 E- H. LAND PHOTOGRAPHIC PROCESSINGAPPARATUS WITH A TUBULAR DEVELOPER DISPENSER 5 Sheets-Sheet 1 FlG.

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ATTORNEYS.

E. H. LAND y 26, 1964 PHOTOGRAPHIC PR ESSING APPARATUS WITH A TUBULARELOPER DISPENSER 3 Sheets-Sheet 2 Filed Aug. 23, 1961 INVENTOR.

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ATTORNEYS y 1964 E. H. LAND PHOTOGRAPHIC PROCESSING APPARATUS WITH ATUBULAR DEVELOPER DISPENSER 3 Sheets-Sheet 3 Filed Aug. 25, 1961 INVENOR.

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ATTORNEYS United States Patent PHOTOGRAPHIC PROCESSING APPARATUS WITH ATUBULAR DEVELOPER DISPENSER Edwin H. Land, Cambridge, Mass., assignor toPoiaroid Corporation, Cambridge, Mass., a corporation of Delaware FiledAug. 23, 1961, Ser. No. 133,343 5 Claims. (Cl. 95-89) This inventionrelates to photographic apparatus for treating exposed photosensitivesheet material with a fluid by distributing the fluid between thephotosensitive sheet and another sheet superposed therewith.

The present invention is concerned with photographic apparatus of thetype in which a fluid processing composition is distributed between apair of superposed pho tographic sheets by advancement of the sheetsrelative to and between a pair of juxtaposed pressure-applying members.In my copending United States patent appli cation Serial No. 820,266,filed June 15, 1959, now Patent No. 3,047,387, there is disclosed asystem for providing a viscous photographic processing fluid between apair of superposed photographic sheets of a film unit, for distributionbetween the sheets by the subsequent advancement of the film unitbetween a pair of juxtaposed pressure-applying members. This system isdesigned to provide a precisely predetermined quantity of the fluid inthe form of a uniformly distributed elongated mass on,

and extending from side to side of the area of, one of the two sheetsover which the fluid is distributed, by

movement of the sheet relative to the pressure-applying members in adirection transversely of the direction of elongation of the mass offluid. The fluid is dispensed from a disposable elongated tubularcontainer, very much like a drinking straw, positioned between thesheets by movement of the container in the direction of its elongationrelative to and across the sheets while the container is beingcompressed. The fluid contents of the container are ejected from theopen trailing end of the container onto one of the sheets in the form ofa uniformly distributed elongated mass. This system of fluid dispensingoffers the advantage of accurate control of fluid distribution,regardless of the rate at which the container is moved across the sheetsand also results in ridding the film unit of the container, so that thecontainer does not affect the subsequent distribution of thefluid'between the sheets. The fluid, in most cases, includes aviscosity-increasing agent which hardens upon evaporation of the fluidmedium (water) and other material, such as developers, which oxidizereadily, and must be kept from contact with the air. Obviously, the verynature of the fluid, itself, is the basis for many of the problemsinvolved in its dispensing.

An object of the invention is to provide, in a photographic apparatus ofthe type described for processing a 'succession of exposed areas of aphotosensitive sheet,

novel and improved means, including a tubular fluid dispensing member,for dispensing successive predetermined quantities of said processingfluid on one of a pair of superposed photosensitive and second sheets,for distribution between successive exposed areas of the photosensitivesheet and areas of the second sheet superposed there-' with.

Another object of the invention is to provide fluid dispensing means ofthe type described which can be operated manually to give uniformresults.

A further object of the invention is to provide fluid dispensing meansas described, which is simple and inexpensive in its construction andreliable in its operation.

Other objects of the invention will in part be obvious and will in partappear hereinafter.

The invention accordingly comprises the apparatus possessing theconstruction, combination of elements and arrangement of parts which areexemplified in the following detailed description taken in connectionwith the acwhich will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description taken inconnnection with the accompanying drawings wherein:

FIGURE 1 is a schematic sectional view of photographic apparatusincorporating the invention;

FIG. 2 is a perspective view, partially in section, illustrating thefluid dispensing means of the invention;

FIG. 3 is a plan View of the fluid dispensing means;

FIG. 4 is a vertical section taken substantially along the line i -4 ofFIG. 3;

FIGS. 5A and 5B are sectional views taken substantially along the line5-5 of FIG. 3 illustrating two positions of components of the fluiddispensing means;

FIG. 6 is a fragmentary perspective view illustrating another embodimentof components of the fluid dispensing means; and

FIGS. 7A and 7B are vertical sectional views taken substantially alongthe line 7-7 of FIG. 6 illustrating two positions of the components ofFIG. 6.

The fluid dispensing means of the invention is incorporated inphotographic apparatus wherein successive areas of a photosensitivesheet are exposed and processed. Apparatus of'this type includes, forexample, cameras, printing apparatus, and document copying apparatussuch as shown and described in the copending United States patentapplication of Edwin H. Land et al Serial No. 133,483, filed August 23,1961, in which the exposed areas of the photosensitive sheet areadvanced into superposition with areas of a second sheet and thesuperposed sheets are moved between a pair of juxtaposedpressureapplying members for distributing a processing fluid between thesuperposed areas of the sheets. This processing of the exposedphotosensitive sheet may be designed to produce a positive image on thesecond sheet by a silver halide diflusion transfer-reversal process suchas described in U.S. Patent Nos. 2,543,181, issued February 27, 1951,and 2,662,822, issued December 15, 1953, both in the name of Edwin H.Land. A predetermined quantity of processing fluid to be distributedbetween each pair of areas of the photosensitive and second sheets isprovided for distribution on one of the sheets adjacent an edge of thearea thereof over which the fluid is to be distributed, in the form of auniformly distributed elongated mass extending substantially from sideto side of the area. The fluid dispensing means of the invention isdesigned to provide successive predetermined quantities of the fluid inthis manner for distribution between successive superposed areas of thephotosensitive and second sheets as each pair of areas approaches a pairof juxtaposed pressure-applying members between which the sheets aremoved for distributing the fluid from the elongated mass. The fluiddispensing means is required to dispense a precise quantity of fluid fordistribution between each pair of superposed areas, to distribute thefluid in exactly the same manner each time, regardless of variations inthe manner in which it is actuated, and to be uniformly reliable in itsoperation.

Reference is now made to FIGURE 1 of the drawings wherein there isillustrated schematically photographic apparatus for exposing andprocessing a photosensitive sheet and incorporating the invention, andto FIGURES 2 through 7 which illustrate the fluid dispensing apparatus.The apparatus embodying the invention comprises means shown as a spool10 for holding a supply of photosensitive sheet material 12. Guidemeans, designated 14, are provided for locating successive areas of thephotosensitive sheet in position for exposure to actinic light by asuitable exposure means such as a lens, designated 16, illustrated asbeing joined to the guide means by a bellows 18; it being understood,however, that the exposure and guide means may include any of theconventional systems for exposing photosensitive sheet material,including exposure means of the type employed in document copiers, suchas described in the aforementioned application Serial No. 133,483.

The apparatus includes a second spool 20 for holding a supply of asecond or print-receiving sheet 22 and a pair of juxtaposedpressure-applying members, in the form of rolls 24, between which thephotosensitive and second sheets are advanced in superposition fordistributing a processing fluid between the sheets to form a sandwich.The apparatus also includes a pair of feed rolls 26 for engaging thesandwich and advancing the sheets through the apparatus and means (notshown) of a conventional type, for driving the feed rolls andcontrolling and coordinating the functions of the various components ofthe apparatus.

The fluid dispensing means, in the form shown, comprises means, in thiscase guide means 14, for supporting a section of photosensitive sheet 12adjacent the bite of rolls 24. The fluid distributing means is designedto distribute'a predetermined quantity of the processing fluid in anelongated mass across this section of photosensitive sheet 12 closelyadjacent rolls 24, intermediate the rolls and the leading edge of anexposed area of the photosensitive sheet. The fluid dispensing meanscomprises an elongated tubular member 28 including a portion employedfor fluid dispensing and having a substantially uniform cross sectionthroughout its length. The tubular member, in the form shown, has acircular cross section. However, other cross sections are possible andconsidered to be within the scope of the invention, so long as the crosssectional area of the inner surface of the fluid dispensing portion ofthe tubular member remains constant throughout the length of theportion. The tubular member is formed of a flexible resilient material,such as rubber and organic plastics, which permits the tubular member tobe bent and to be compressed, and which has sufficient resilience andelasticity to cause the tubular member to return to its original crosssectional configuration after a deforming force has been relieved. Thefluid dispensing portion of the tubular member is open at one end toform a discharge mouth 30 and is connected at its other end to acontainer 32 having a capacity for suflicient processing fluid tocompletely fill the tubular membet a plurality of times. The fluiddispensing portion of the container is designed to meter predeterminedquantities of the processing fluid and is at least equal in length tothe length of the elongated mass of fluid to be dispensed from thetubular member. This mass of fluid is preferably approximately equal tothe width or transverse dimension of the area over which the fluid isdistributed and the capacity of the container may, in one form, besuflicient to provide a predetermined quantity of the fluid on each ofthe exposed areas of photosensitive sheet 12 supplied on spool 10.

The processing fluid may be quite viscous, may contain a thickeningagent which hardens upon evaporation of the fluid (water), and maycontain materials, such as developing agents, which are readilyoxidized. Container 32 is constructed to permit substantially all of thefluid contents of the container to be fed into tubular member 28 and,for this purpose, may be collapsible or include a collapsible wall, suchas will permit the fluid contents of the container to flow into thetubular member under atmospheric pressure. In another embodiment, thecontainer may be pressurized, for example, by the inclusion of a gasunder pressure in the container tending to force the fluid to flow intothe tubular member.

Ejection of the fluid contents of the tubular member through dischargemouth 30 onto photosensitive sheet 12 isaccomplished by firstpositioning the tubular member adjacent photosensitive sheet 12 and thebite of rolls 24, with the tubular member extending across sheet 12,with discharge mouth 3t? disposed at one longitudinal edge of the sheetand the container located at the opposite longitudinal edge of thesheet. The tubular member is then moved in the direction of itselongation across the sheet away from mouth 30 while succeeding sectionsof the tubular member are compressed adjacent said opposite edge of thesheet for forcing the fluid contents of the tubular member therefromthrough mouth 30. The quantity and distribution of the fluid ejectedfrom the tubular member through mouth 30'is thereby made independent ofthe rate at which the tubular member is moved across the sheet, and isdependent only on the cross sectional area of the tubular member and theposition of the tubular member during movement.

Means are provided for effecting the movement of the tubular member andsupporting the tubular member during this movement. This means includesa spool or drum 34 mounted for rotation adjacent the side of thephotosensitive sheet opposite discharge mouth 3%), andhaving asubstantially cylindrical circumferential surface with flanges at itsends. Spool 34 is rotatable about an axis perpendicular to the directionof movement of the container across the sheet, and substantiallyperpendicular to the plane of the section of the sheet on which thefluid is dispensed. The tubular member extends from discharge mouth 30across sheet 12 and around a section of the cylindrical surface of spool34 between the flanges to container 32, and movement of the tubularmember across the photosensitive sheet to elfect the discharge of thefluid contents of the tubular member can be accomplished by moving thecontainer in a direction more or less parallel with,

the direction of movement of the photosensitive sheet. This particularconstruction is preferred because it contributes to a reduction in theoverall size of the apparatus which would not be possible if thecontainer were moved, for example, in a direction parallel with the axesof rolls 24.

Means are provided for compressing the container as it is moved from thefirst position described, i.e., with the container and discharge mouthdisposed adjacent opposite sides of the sheet, to a second position inwhich the discharge mouth is located adjacent the same side of the sheetas the container in the region of spool 34. This means comprises apivotable pressure member 36 mounted adjacent spool 34 with one endextending toward and into engagement with a section of tubular member 28located between the cylindrical surface of the spool and pressure member36. Pressuremember 36 is biased toward spool 34 by a relatively weakspring 38 and is essentially self energizing by virtue of the frictionalengagernent between the tubular member and the pressure member duringmovement of the tubular member from the first to the second positionwhich tends to force the pressure member against spool 34 and therebyapply compressive pressure to the section of the tubular member locatedbetween the spool and pressure member. During movement of the tubularmember in the opposite direction, i.e., from the second to the firstposition, frictional engagement between the tubular member and pressuremember tends to pivot the pressure member away from spool 34 and therebyrelieve the compressive pressure on the tubular member. The force ofspring 38, of course, is insuflicient to cause the pressure membertocompress the tubular member, the spring being provided for the solepurpose of retaining the pressure member in engagement with the tubularmember to insure self-energization of the latter. As the tubular memberis moved from the first to the second position thereof, the fluidcontents of the portion of the tubular member intermediate the pressuremember and the discharge mouth remain substantially sta-' tionary withrespect to the tubular member, and are thereby ejected from thedischarge mouth as the latter is moved across the photosensitive sheet.The portion of the tubusubstantially full of the fluid at all times.

lat member located to the opposite side of spool 34 and pressure member36, i.e., between the spool and pressure member and container, becomesrefilled with the fluid as the fluid is being ejected from the open endof the tubular member, and in this manner, the tubular member remainsAtmospheric pressure may prove sufficient, if the viscosity of the fluidis not too great, to cause the fluid to flow from container 32throughout the length of the tubular member. However, pressurization ofthe container may be necessary in order to cause the fluid to flow fromend to end of the tubular member, particularly, if the fluid is quiteviscous.

Movement of the tubular member from the second to the first position iseffected by the provision of a connecting element coupled with thetubular member in the region of its discharge mouth for pulling the endof the tubular member across the photosensitive sheet. This meanscomprises, in the form shown in FIGS. 2 through 7, a flexible connectingmember 40, such as a cable, wire, or metal strip and a second spool ordrum 42 mounted adjacent the side of the photosensitive sheet oppositespool 34 and providing means on which the connecting member is coiledwhen the tubular member is in the first position thereof. Spool 42 maybe provided with a torsion spring type of return mechanism which causesthe spool to recoil connecting member 40 after the latter has beenwithdrawn from the spool in order to return the tubular member to itsfirst position from its second position.

The connecting member is coupled with the tubular member in such a wayas not to interfere with the flow of fluid from discharge mouth 30. Inthe form shown in FIGS. 2 and 3, a pair of diametrically spaced ears 44are provided on the outside of the tubular member adjacent the dischargemouth, and two relatively short connecting elements 46 are connected tothe ears on opposite sides of the discharge mouth and are coupled with alink 48 secured to connecting member 40, the link serving to retainconnecting elements 46 in their spaced positions.

In another embodiment shown in FIGS. 6, 7A and 7B, connecting member 40is coupled with a collar 50 secured around the tubular member adjacentthe discharge mouth thereof.

As previously noted, the tubular member is substantially filled with thefluid at all times, including the period when.

the tubular member is located in the first position thereof. For thisreason, means are provided for closing the discharge mouth, when thetubular member is in the first position, to prevent loss of the fluid byleakage or evaporation through the discharge mouth. In the form shown inFIGS. 2, 3, 5A and 5B, this means comprises a pair of juxtaposedpressure members 52 having convergent facing surfaces defining a taperedchannel 54 into which the discharge mouth is advanced from the positionshown in FIG. 5A to the position shown in FIG. 5B, during movement ofthe tubular member from its second to its first position. Connectingmember 40 extends through the channel and functions to pull the leadingend of the tubular member into the channel during the last portion ofthe movement of the tubular member from its second to its firstposition, causing the discharge mouth to be compressed and closed. Inanother form of apparatus shown in FIGS. 6, 7A and 7B, the end portionof the tubular member comprising the discharge mouth projects throughand beyond collar 50 and a tapered plug 56 is provided mounted adjacentthe side of the photosensitive sheet and spool 42 in the path ofmovement of the discharge mouth, so that the latter is drawn from aposition shown in FIG. 7A, into surrounding engagement with the taperedplug 56, to the position shown in FIG. 7B, during the terminal portionof the movement of the tubular member from its second to its firstposition. Both of the foregoing means for closing the discharge mouthremain stationary and permit the discharge mouth to open almostimmediately as movement of the tubular member from its first position iscommenced.

converge at the bite of the pressure-applying rolls.

To efiect the processing of an exposed area of the photosensitive sheet,the tubular member 28, filled with the processing fluid, is moved fromits first position to its second position, thereby advancing dischargemouth 30 from one side of the photosensitive sheet across thephotosensitive sheet to the other side thereof, while the fluid contentsof the portion of the container extending across the sheet is ejectedfrom the discharge mouth and disposed upon the photosensitive sheet inthe form of the desired elongated mass. Movement of the tubular me beris effected, for example, by engaging and moving container 32 againstthe bias of the spring windup mechanism of spool 42. In anotherembodiment (not shown), the container may be constructed to function asa spool on which the tubular member is coiled to effect movement of thetubular member from the first to the second position thereof. In thisembodiment, the mechanism of the apparatus will include means forrotating the container so as to coil the tubular member around theexterior of the container. The apparatus could be further modifiedwithin the scope of the invention by utilizing the container itself asmeans around which the tubular 'member is coiled as one of a pair ofpressure-applying to the sheets in a direction opposite the direction ofmovement of the sheets between the pressure-applying rolls. The tubularmember is retained in its first position in readiness for subsequentoperation for dispensing another quantity of the processing fluid on thephotosensitive sheet. While the apparatus has been shown as beingdesigned for dispensing a processing fluid on the photosensitive sheet,it is also contemplated that the fluid can be dispensed by the samemechanism on either the second sheet or on both sheets in the regionwhere the sheets In this latter embodiment, the bite of thepressure-applying rolls would, of course, be located beneath the path ofmovement of the discharge mouth of the tubular member across the sheets.

Since certain changes may be made in the above apparatus withoutdeparting from the scope of the invention herein involved, it isintended that all matter contained in the above description or shown inthe accompanying drawings shall be interpreted as illustrative and notin a limiting sense.

What is claimed is:

-1. Photographic apparatus for treating successive exposed areas ofphotosensitive sheet material by distributing a fluid processingcomposition in contact with said exposed areas of said photosensitivesheet, said apparatus comprising, in combination, fluid distributingmeans for engaging said sheet and distributing a processing fluid incontact with said sheet during movement of said sheet relative to and inengagement with said means; and fluid dispensing means for dispensing apredetermined quantity of said processing fluid on said sheet adjacentsaid fluid distributing means in the form of a uniformly distributedelongated mass extending transversely of the direction of movement ofsaid sheet relative to said fluid distributing means; said fluiddispensing means including an elongated tubular member having asubstantially uniform interior cross section throughout a fluiddispensing portion thereof, saidfluid dispensing portion of said tubularmember being deformable by compression and having suflicient resilienceto resume its original configuration upon removal of a deforming forceapplied thereto, said fluid dispensing portion of said tubular memberbeing open at one end to provide a discharge mouth and being connect- 7ed at its other end to a container having a capacity for suflicientfluid to substantially fill said portion of said member a plurality oftimes, said portion of said member being mounted for movement between afirst position in which said portion of said member is located adjacentsaid sheet and extends from side to side thereof with said dischargemouth located adjacent one side of said sheet and said other end of saidportion disposed adjacent the opposite side of said sheet, and a secondposition wherein said discharge mouth is located adjacent said oppositeside of said sheet, means for moving said tubular member between saidfirst and second positions so as to move said discharge mouth from sideto side of said sheet, and means for deforming said portion of saidmember adjacent said opposite side of said sheet to effect the dischargeof fluid contained within said portion of said member through saiddischarge month during movement of said member from said first to saidsecond position.

2.The photographic apparatus of claim 1 including means for engagingsaid tubular member at said first position for closing said dischargemouth when said tubular member is in said first position.

3. The photographic apparatus of claim 2 wherein the last-mentionedmeans comprise a pair of pressure-applying members for engaging said oneend of said tubular member.

4. The photographic apparatus of claim 2 wherein said last-mentionedmeans are located adjacent said one side of said sheet and aresubstantially fixed against movement with respect to said sheet and saidjuxtaposed members.

5. Photographic apparatus for treating successive exposed areas of aphotosensitive sheet by distributing a fluid processing compositionbetween said exposed areas of said photosensitive sheet and areas of asecond sheet in length to the width of said areas and extendingtransversely of the direction of movement of said sheets be tween saidmembers, adjacent the leading edges of successive superposed areas ofsaid sheets; said fluid dispensing means including an elongated flexibletubular member having a substantially uniform interior cross sectionthroughout its length, said tubular member being deformable bycompression and having sufiicient resilience to resume its originalcross section configuration upon removal of a deforming compressiveforce applied there-' to, said tubular member being open at one end toprovide a discharge mouth and being connected at its other end to acontainer having a capacity for suflicient fluid to substantially fillsaid tubular member a plurality of times, said tubular member beingmounted for movement in the direction of its elongation between a firstposition in which said tubular member is located adjacent said sectionof said one sheet and extends from side to side of said area thereoftransversely of the direction of movement of said one sheet between saidjuxtaposed members with said discharge mouth located adjacent one sideof said sheet and said container disposed adjacent the opposite side ofsaid one sheet, and a second position wherein said discharge mouth isdisposed adjacent said opposite side of said one sheet, means for movingsaid tubular member between said first and second positions so as tomove said discharge mouth back and forth across said sect-ion of saidone sheet from side to side thereof, means for engaging said tubularmember adjacent said oppoiste side of said one sheet and com-pressing aportion of said tubular member to effect the discharge of fluidcontained within member during movement thereof from said second to saidfirst position, and means for closing said discharge mouth when saidtubular member is in said first position.

References Cited in the file of this patent UNITED STATES PATENTS2,719,789 Land Oct. 4, 1955 2,789,488 Eloranta Apr. 23, 1957 2,797,625Fairbank July 2, 1957 2,834,272 Erlichman May 13, 1958

1. PHOTOGRAPHIC APPARATUS FOR TREATING SUCCESSIVE EXPOSED AREAS OFPHOTOSENSITIVE SHEET MATERIAL BY DISTRIBUTING A FLUID PROCESSINGCOMPOSITION IN CONTACT WITH SAID EXPOSED AREAS OF SAID PHOTOSENSITIVESHEET, SAID APPARATUS COMPRISING, IN COMBINATION, FLUID DISTRIBUTINGMEANS FOR ENGAGING SAID SHEET AND DISTRIBUTING A PROCESSING FLUID INCONTACT WITH SAID SHEET DURING MOVEMENT OF SAID SHEET RELATIVE TO AND INENGAGEMENT WITH SAID MEANS; AND FLUID DISPENSING MEANS FOR DISPENSING APREDETERMINED QUANTITY OF SAID PROCESSING FLUID ON SAID SHEET ADJACENTSAID FLUID DISTRIBUTING MEANS IN THE FORM OF A UNIFORMLY DISTRIBUTEDELONGATED MASS EXTENDING TRANSVERSELY OF THE DIRECTION OF MOVEMENT OFSAID SHEET RELATIVE TO SAID FLUID DISTRIBUTING MEANS; SAID FLUIDDISPENSING MEANS INCLUDING AN ELONGATED TUBULAR MEMBER HAVING ASUBSTANTIALLY UNIFORM INTERIOR CROSS SECTION THROUGHOUT A FLUIDDISPENSING PORTION THEREOF, SAID DISPENSING PORTION OF SAID TUBULARMEMBER BEING DEFORMABLE BY COMPRESSION AND HAVING SUFFICIENT RESILIENCETO RESUME ITS ORGINAL CONFIGURATION UPON REMOVAL OF A DEFORMING FORCEAPPLIED THERETO, SAID FLUID DISPENSING PORTION OF SAID TUBULAR MEMBERBEING OPEN AT ONE END TO PROVIDE A DISCHARGE MOUNT AND BEING CONNECTEDAT ITS OTHER END TO A CONTAINER HAVING A CAPACITY FOR SUFFICIENT FLUIDTO SUBSTANTIALLY FILL SAID PORTION OF SAID MEMBER A PLURALITY OF TIMES,SAID PORTION OF SAID MEMBER BEING MOUNTED FOR MOVEMENT BETWEEN A FIRSTPOSITION IN WHICH SAID PORTION OF SAID MEMBER IS LOCATED ADJACENT SAIDSHEET AND EXTENDS FROM SIDE TO SIDE THEREOF WITH SAID DISCHARGE MOUTHLOCATED ADJACENT ONE SIDE OF SAID SHEET AND SAID OTHER END OF SAIDPORTION DISPOSED ADJACENT THE OPPOSITE SIDE OF SAID SHEET, AND A SECONDPOSITION WHEREIN SAID DISCHARGE MOUTH IS LOCATED ADJACENT SAID OPPOSITESIDE OF SAID SHEET, MEANS FOR MOVING SAID TUBULAR MEMBER BETWEEN SAIDFIRST AND SECOND POSITIONS SO AS TO MOVE SAID DISCHARGE MOUTH FROM SIDETO SIDE OF SAID SHEET, AND MEANS FOR DEFORMING SAID PORTION OF SAIDMEMBER ADJACENT SAID OPPOSITE SIDE OF SAID SHEET TO EFFECT THE DISCHARGEOF FLUID CONTAINED WITHIN SAID PORTION OF SAID MEMBER THROUGH SAIDDISCHARGE MOUTH DURING MOVEMENT OF SAID MEMBER FROM SAID FIRST TO SAIDSECOND POSITION.